Locomotive-engine.



F43 COLE & F. F. scovlLLt. I

LOCOMOTIVE- ENGINE. APPLICATION FILED EBB.9,1911.

mm n72, 19.11,.

WITNESSE 'STATESPATENT OFFICE.

runners J. COLE'ANID FRANK-r1 SCOVILLE, or 'SGHENECTADY, New yom tocoivrorrrvn-nnsmn.

- Specification of Letters Patent.

Patented May 2; 1911.

Application 'filed February 9,191.1. Sria1No.'607,498.

To all whom it may concern:

- ber" 12, 1909, and its object is to provide:

Be'it known that we, FRANCIS J Conn and FRANK F. SGOVILLE, both of Schenectady, in the countyof Schenectady'and State'of New York, have jointly invented a certain new and useful Improvement in Locomotive-Engines, of which improvement the following isa specification.

Our invention relates to trailing trucks for locomotive engines, of the general class or type of that ,which is 'setfforthin Letters Patent .of c the United States No.. 936,413, granted and issued to us under date of Octosimplified. and improved means. for effecting the necessary universal, adjustment between the trailing spring, yoke, and journalbox. I

The improvement claimedishereinafter fully set forth. s

In the accompanying drawings: Figurel is aside .view, in elevation, of so much of a locomotive engine trailing trnck vas will suffice to illustrate an a pplicationof our inven'-.

- tion; ,Fig. 2, a partial plan or top'view of the same Fig. 3, a.transverse central section,

on an enlargedscale, through the yokeeand spring seat; and, Fig, 4,-along1tud1nal' 'cen- .tral section through thesame.

Except, as hereinafterdescribed, our in1-. proved. trailing truck'accords,'in all substan 'tial particulars, with. that set forth 1n Let-' ters Patent'No. 936,413 aforesaid, and the features constituting our presentnvent on only need. therefore tolbe'hereinfully and at length specified.-

In the practice of our invention, thetr'uck axle, 3 upon which the truck wheels, 3, are secured, is, as inLetters-Pate'nt'No. 936,413, provided with outside journals, which 'rof'tate'in bearings fitted journal boxes, 69,; in the usual manner, and the rear m'a1n frame members, 8 of-the locomotive, are

supported upon the truck axle through the intermediation of springs, '42, the bands, 42

of which are seated upon' t-h'e tops 'ofthe journal boxes, 69, means, which constitute a leading and characteristic feature of our.

present inventiomand which will now be dee scribed, being interposed. between the-spr ng bands and journal j bo-xes. i By'the .appl1cati'oii of said means, the operative results of universal adjustment -of the springs and journal boxes which are attained by the construction set forth in Patent. No. 936,413,;

are, under our pres'entinven-tion, provided with a substantial simplification and economization' of s'tructure andcost.

I Floating yokes, 50, extend longitudinally below the springs,'t2, and are coupled-at t11e1r en ds, to therear mainframe members, 8 and 'interlnedlate their ends, by a universal 'joint'connection, to the springs. 42, and

journal boxes, 69. To. this end, the spring bands, 42, are fitted in spring seats, which rest on the ournal) boxes, "69, eachof said spring seats comprising an upper (section,

42 having its top recessed for the reception of the spring band,-'and a lower section, 42 which abuts on the top of the journal box., -The adjacent faces of'the upperand lower spring seat sections are each recessed in-the. form of aseg'mentof a sphere, and-a substantlally sphericalball bearing,i5'2, is interposed between the spring seat sections,

fitting. truly in the recesses thereof. T he ball bearing,-52, is divided, diametrically and horizontally, into sections, having short -.cyli11drical ivots, 52?, on their 'adja cent faces, which t truly in a concentric 0y.-

lindri'cal' bore formed in theweb of the 'fioatlngyoke, 50. An, oil -cup,42 is formed on ball bearings, and the capacity of free movement of the springs and journal boxes about the centers" of the ball bearings, complete freedom-of-funiversalself adjustment of said members isfafl'orde'd, without necessitating the use of'bolts', trunnion blocks, or other members which would tend to wear or work loose in. service and involve. expense of manufacture and, maintenance.

Thefloating .yokes, 50,- are curved inwardly, in front andxre'arofthe adjacent truck wheels, andvare coupled by longitudinally extending pivots, .to lugs, "50, on. brackets, .50, secured to the rear main frame members, 8 In lieu of coupling'the rear ends offthe truck springs to the brackets, 50, .by' spring hangers, as in Patent No. 936,413,

the frames bear 1 on the rear ends of the' springs, under our present invention, through rollers, 42 j ournal'ed on pins, 42*, which are iio " fiited sockets, 50 on thetops of the frame set ,oand avoids the objection'incident to the limited clearance between the yoke and the bottom of the bracket. It also admits of the of a much shorter yoke and allows suftiment'room for the attachment of the trailing truck brake hangers in rear of the vokes.

'YWe; claim asour invention and desire to secure by Letters Patent:

. 1. In a. locomotive engine, the combinatlOIizOf a mam frame, a radialtruck pivoted thereto, springs'through which weight borne vby thejournal main frame is transmitted to the boxesof the truck, floating yokes pivoted-at their ends. tothe main frame, andjoints comprising pairs of ball bearings, interposed between the springs the floating vyokes.

h the, main frame is journal In a locomotlve engine: the combination ofa mam frame, a radial truck pivoted thereto, springs through which weight borne bv the main frame is transmitted to the journal boxes of the truck, floating yokesj ends to the main frame, and

pivoted attheir bearings pivoted in said jokes and interposed between "boxess the springs and journal 3. In a locomotive engine, the combination of a main frame, a radial truck pivotedthereto, springs through which weight borne by the main frame is transmitted to the pivoted at their ends to the main frame, seats in which said springs are supported on thehjournal boxes, and universal joints com-. prising pairs ofball hearings, interposed between 'the spriiig seats and the floating'yokes;

, i. In a locomotive engine, the c0mbina tion of a main-frame, aradial truck pivoted thereto,ssprings'through which weight borne transmitted to the boxes of the truck, floating yokes journal boxes of th 't pivoted at their ends tional spring seats in rp springs and journal-boxes, and ball bearings pivoted in the yokes, and fitting correspondmg recesses in the sections of the spring i seats. a

5, In a locomotive engine, the combination of a main frame, a radial truck. pivoted thereto, springs through which weight borne by the main frame. is transmitted to the journal boxes of the truckQfloatingyokes pivoted at their endsto the main frame, upper spring seat sect-ions receiving the spring bands, lowenspring seat sections -.resting on the journal'bbxes; said upper and lower sec-. tions being sph joining faces;- and bearings pivoted in thefloating yokes and fitting in the, recesses of the sprmg seat sec tions.

-6. In 'tionof a mainjrame, a radial truck pivoted thereto, springs through which weight borne by the main frame is transmitted to the journalboxle'slofthe truck, brackets fixed to the main frame in rear of said springs,'float-" 'caliyrecessed on their adh diametrically divided b ll.

ose'd between the ing okes-pivoted at their ends to the main frame and to said brackets-universal joints interposed between. the springs and, the

floating yokes, pins fixed in sockets in the frame brackets and rollers journaled on said pins and bearing on the rear: of the prmg i locomotive engines having a-socket for the fiame bracket tor radial truckerreception of the ournals of a spring roller atits top and a lateral Divot lug for a floating yoke adjoining its lower side.

FRANCIS J. COLE. V ,1 5' F RANK F. SCOVILLE. Witnesses-z S. W. Trina, 

